36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Date: Mon, 18 Sep 2017 16:03:41 +0530
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Subject: [PATCH] ASoC: Intel: Skylake: Check for NHLT ACPI header signature
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Due to buggy BIOS acpi_evaluate_dsm() may not return the correct NHLT
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table, so check the NHLT table header signature before accessing it.
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Change-Id: I525cc504f1cf71d969bdcc2120b8a280dedeb4f5
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Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Reviewed-on:
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Reviewed-by: audio_build
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Reviewed-by: Prusty, Subhransu S <subhransu.s.prusty@intel.com>
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Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
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Tested-by: Sm, Bhadur A <bhadur.a.sm@intel.com>
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---
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sound/soc/intel/skylake/skl-nhlt.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c
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index b9bc3d12d0c0..2f164404b239 100644
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--- a/sound/soc/intel/skylake/skl-nhlt.c
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+++ b/sound/soc/intel/skylake/skl-nhlt.c
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@@ -28,6 +28,8 @@ static guid_t osc_guid =
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GUID_INIT(0xA69F886E, 0x6CEB, 0x4594,
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0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53);
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+#define NHLT_ACPI_HEADER_SIG "NHLT"
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+
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int skl_get_nhlt_version(struct device *dev)
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{
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const char *version;
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--
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https://clearlinux.org
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